Spring construction.



T. L. A. ADLBR. SPRING CONSTRUCTION. APPLICATION IILEI] NOV. 24, 1909.

Patented May 2, 1911 W M M 1A. A L G w /M T. M0

MM/11mm ll) ht rl'll THEUDOR L. AQA'DLEB. G1 DETROIT, MICHIGAN, ASSIGNOIR (It tJNE-HALL? TO WILLIAM G. SULLI'VZELN, 0E DETROIT, MICHIGAN.

SPRING CON$TRUGTION.

seiner.

Specification of lietters Patent.

Patented may 1911.

Application filed November M, 1909. Serial No. 529,790.

the edge by a suitable roll of upholstery filling, such as hairor the like, that is secured by the seat or back covering to the margin of the rigid frame on which the main springs are placed. This does notyield unilormly with the main body and is liable to become matted or packed and to. thus form a hard edge which is unpleasant to the seat occupant.

This invention relates to a cushion spring construction provided with a spring edge that yields uniformly with the adjacent por tions otthe body springs. and preserves the contour of the upholstery.

The intention consists in the matters hereina "er set forth, and more particularly pointed out in the appended claims.

lathe drawings, Figure 1 isan elevation of a portion of a spring structure that em- I bodies features of theinvention. some of the members being omitted: Fig 2 is a View in end eleration thereof; Fig. I) s a \iew'in end elevation showing a modification or the structure; Fig. 4: is a view in detail of one of the spring members; and Fig. :1 is a View in detail showing the disposition of cross stays.

Referring to the drawings the front of a base or frame 1 is covered by a spring body structure that consists, preferably, of body spring-s 2. of helical or standard hour glass lype. which are. arranged in series and held in position by tie wires 3 or other suitable means; the sides of the structu'e may be reinforced by a border frame secured by clips or the like to the outer ends of the body sprii'igs. Stay wires 6 may be used to connect the upper coils of the main springs or the frame 4 with the members oi. the back frame 1 along that margin which is adjacent the seat cushion; Preferably the stays (3 are bent into loops 7 intermediate their ends so that they may yield slightly under strains.

The top of. the spring cushion isforn ied by means of a row of edge springs each formed with two curved. arms 10 which form the upper ,part of the face of the cushion and with the vertical coils 9 in each arm which form the top edge of the cushion, the

two arms being united between the coils by a horizontal portionS forming a base for the suppo 't of the spring upon the top 18 of the.

hack frame. Each edge spring is united with its arms to thetop coil of the cushion spring next below and thustorms a part of such spring. edge springs may be made integral with these springs tearing thus only one arm of each edge spring to be united.

As shown in the drawings the arched porti n 10 of each edge spring, while the lower stay member 19 is preferably attat-lied to the lower portion (below the eyelet 0) of each cdge spring. and is of sufii cient rigidity to transmit from one spring to another any lengthwise strains imposed upon it. There is thus constituted by this series oi arched edge springs and their conmun;- stay members an edge cushioning structure any of whose members will yield to strain imposed directly thereon. but the deg-rec of whose distortion is yieldingly reduced from what it would otherwise be by the pull of the-stay members 12 and 19, which transmit some of the strain to the arched spring members immediately adjacent and a lesser amount to those farther from the point of greatest. strain. In the case of the more or less resilient-members 12, which are nearest the top part. of the spring, where the greatest strain occurs, their yielding character causes a less pull to be placed on the adjacent arched springs than by the relatively unyielding lower member 19; thus the top edge. against which the usersbody rests. is rendered most yielding and soft. The edge springs thus form a cushion for the upper part of the heel; as well as for the and it requires. but little springs also greatly increase the action and el'liciency of the} djacent cushion springs to which they are initcd it releases them from the direct pressure and downward Weight of the upholstery and allows them to retain their proper position. By this action of relieving some of the strain on the back cushion spring they make it possible to use a lighter and softer Wire in their construction and increase the possibility of forming a very soft and elastic back and yet retain the shape of the cushion.

What I claim as my invention is:

I. In combination with a supporting frame, a helical spring rising tl'iere'trom and adapted to oscillate along its helical axis an arched spring uniting the support and the free end ofthe helical spring. the

L z arch extending beyond the edge ot the supporting frame and'iormnrg a support for an upholsteri-ng cover extending from the plane of the top of the helical spring around the edge of the frame, and a. pair of connecting and bracing members extending from the curved portion of said arch spring to corresponding portions of similar adja cent springs, one of said members bein resilient and the other being relatively rigid, substantially as described.

2. A spring construction, having, in combination with a seat frame and a series of spiral springs mounted thereon somewhat interiorly of one edge thereoii'a corresponding number of arched springs arranged along the edge of said scat, frame and conmelted at their upper and inner ends with the top of said spiral springs, each curving outwardly and-downwardly therefrom to a point of attachment to said frame, and hav- J ing intermediate its ends an integral .loop arranged Within the over-extending curved portion, and a pair of connecting 'and bracing members extending parallel with the ad ijacent side of the frame and connected with cachet said rail springs, the lower one of said members being relatively still, and the upper one being resilient, whereby the edgev of the seat is made yieldingly responsive to compression strains thereon, though held from permanent distortion oil individual spring members by the distribution of the strain through said lower member along the seat on other springs than those directly receiving the strain, substantially as described. 3. In a spring seat, in coml'nnation with a supporting frame, a plurality oi rail sprn .7 arched sp: l

attached thereto at their bottom ends and curving upwardly and outwardly therefrom,

with an integral loop intermediate the ends of each arm of the spring and -Within the curve thereof, a relatively rigid correlating member for the several rail springs, being attached to the lower portion the curved part of each, a series of spiral springs mounted on the frame and somewhat removed from the edge thereof, to the tops of which the upper ends of said rail springs are attarheiil, and a relatively resilient correlating member extemling parallel with the adjacent portion of the frame, and. attached to each ot'the rail springs above the point of attachment thereto of said rigid correlating member, adapted to distribute the st aid on any one of the springs among those :relatively remote from the point of greatest strain, while resiliently substantially as described.

i. In a spring seat, the combination of a frame, a plurality of spiral springs mounted edge thereof, a corresponding series of upwardly arched rail springs attached at their lower ends to the outer or lower face of the frame and bending outside the outer line,

' and above the side, of the frame to points of the others, substantially asdcscribed.

5. An edge spring for a cushion seat, consisting of a unitary piece oi? spring Wire adapted to be yieldingly attached its top to the top of one of the coiled springs of the seat and to be yieldingl y heldvthereby at the desired distance above the plane ofthe base, and to engage at its bottom against the lateral face of the exposed frame piece, its central portion being .eonvolute and arched to 'interiorly of the outer edge thereof at the yieldingly anchored top, whereby an upholstering cushion rested thereon may be .yieldingly held from contact withthe' seat frame along the edge thereof, substantially as described.

6. A sprin seat, having in combination with a supporting frame and a row of helical springs attached at one end each to pertions ct said frame appreciably spaced from the c e tiger-coi a-eorresoondii number of one 1' each .e row of and attached at their tops helical sprin thereon at an appreciable distance from the yielding thereto;

on any one of them is distributed among extend over the edge oi? the seat frame and to the top portion thereof, said arched l of said last-nanied springs, whereby a strain springs extending convolutely therefrom l imposed on any one of said arolied springs a over and outside of the edge of the frame, 3 is yieldingly communicated to the other with their base portions engaging thereagainst, a relatively rigid connecting bar extending parallel to the edge of the frame and attached to the lower arched portion of each of said last named springs, and a resilient connecting member extending parallel to said bar and to the edge of the frame, being I attached to the upper'arched portion of each I springs and yieldingly opposed accordingly,

substantially as described.

In testimony whereof I aflix my signature in presence of two witnesses.

THEODOR L. A. ADLER. -\Vitnesses:

ANNA M. Donn, ANNA-M. SHANNON. 

